Manifold for gas-engines.



xC. RORABECK. 'MANIFOLD FOR GAS ENGINE-S. APPLICATION mm; Mum-14.1915.`

PatentedJuly 1l, 1916@ n y Fi ai .6 O 0 j 26. C 5y 2536' F'ih MM w Sipecivcation 'of Letters Patenti MANIFoLD Foie GAS-ENGINES'.

originati appiicatinnidaanuary 2, '191.5, semina. 12s. nivideaami uns applic-moaned lAp'ri'i 14., 191.5.

State of Ohio, have invented certain new and useful Improvements in Manifoldsfor Glas-Engines; and I do'declare'the following to' be a full, clear, and exact description of the invention,- such as will enable others-- skilled in the art to which it appertains to make and use the saine, reference beingiliad to the accompanying drawings, and to the letters and figures. of. vreference marked thereon, which form apart of this specification.'

`This invent-ion relates to certain new land useful improvements in gas engines. The invention contemplates the application to engines of the above type two ex plosive mixture vconverters,- commonly termed Acarbureters, one. for the use of the heavier grades of voiland'l the other for lighter grades' such as' kerosene, and; it'- further contemplates'the application of a manifold which` is utilized inl connection with both carbureters. For example, when it is desired to run the'engine with gasolene, as when startingfthe engines, the supply of kerosene to the carbureter is shut ofi', but when the engine has become sufHcient-ly heated the supplyof gasolene to the other c'arbureter is shut .ofland the kerosene carbureter is supplied. In one case, .to-Wit,

when the-engine is being run on gasolene, the gasolene and air is subjected to the heat ofthe` exhaust an in thatcase the valves located in the manifold admit the. explosive mixture fromthe manifoldY to the crank case and thenceto the compression end of the exhaust passage, intake passage, air and the cylinder. In the other casato-wit, when the kerosene carbureter is 1n use, the valves inthe'manifold admit air to the crank casev from the n ianifold-' The manifold prof' vid'es' for the'intake and exhaust.. vThe airused in the formation of the explosive Huid in both cases is preheated from the exhaust and reheated in the mani-fold before entering the cylinder.. To tliese'ends water passages, are combined in the manifold and the intake passage `is subject to-the heat of the exhaust as will be hereinafter more particularly described.- The features embodying the subject matter ofthe descripl Serial No. 21,203.

Be it known that I, CLAUnn Romeinen',

vtion to follow and embraced in theclaims is divided from my pending-application, Serial N o. 126, filed January 2, 1915. Referringto ,the accompanying drawings,

Patented July-'11, j"

. Figure 1 is a lateral vvertical section through one cylinder of Va two-cyclegas engine with my improvements lapplied thereto; Fig. 2 is.

a section on the line 2 2 of Fig.1;'.Fig. 3 is" a section on the line of Fi 2 Fig.v Liris 'a top plan view ofthe manifod with parts broken away 'to show the passageway for the cooling. medium; Fig. 5 is asectionvon the line 5 5 of Fig. 3*; Fig. 6 is a section on the line 6--'6lof Figs. 2 and 3; and Fig. 7

is a section on the line 7-7 of Fig. 1.

Throughout the specification and draw-` ings, -similar reference oharactersrepresentf corresponding parts both inthe description and drawings. .i Referring more particularly to the drawings, 8 represents 'the crank case of an engine uponl which are mountedcylinders -9.-

Reciprocatingly mounted within each cylinder 9 is a-piston 10 `connected to acrank 11 by arod -12 in a well known manner. Each cylinder 9 has a head 13 provided fwith a priming cock'll, and with any well known form vof ignition device 15, and a watercooling jacket 16. The air for supporting the portion of the fuel in the 'cylinder is previously compressed. within the crank case and is conducted into'the cylinder 9 above the piston through lower and upper side ports 17-17 in 'the cylinder wall and a v port 18 in the side of the piston. In order to prevent the top face of the piston 10 becoming overheated, the said piston is provided with a horizontal wall 19 which Afoi-ins` a cross passageway 2O on the lunder side of the top face of said piston. The air or mixture when passing from the crank case to the lcylinder passes through the passageway 20 and along the under side of the top of the the piston at a reduced temperature.

jacket 21 which connects with the cooling jacket 16- around the sides of the cylinder through ports 22.1 The said head 13 is also provided with an air space 23 which llies between the head 13 and thercooling jacket 21.

The said'air space 23 may or may not be open to the atmosphere and the same is instrumentalA in maintaining a desirable temi separated from said eahaust passageway by a wall 43, as shown 1n Fig. 5.

perature in the cylinder-head. Each cylinder`9 15 provlded with exhaust ports 2l 4 which communicate with a passageway 25 of a combined exhaust and mtake manifold 26.

The passageway 25 is closed at one end and may be connected with an exhaust pipe (not shown) at the other end 27, shown in Fig.

. being of the automatic type with spring '45.

The. said valve casing 32 is mounted in a pocket formed by the wall 33 of the inani- :told and is provided' with si deport which vcommunicates with a passageway which lies below and to one side-fot the exhaust passageway 25, said passageways and 35 being separated by a wall 36, shown in Fig.

3. The passageway. 35 is provided with a vcentrally disposed opening 37 which connects with a gasolene carburetor 3B'by means of a curved `tube 39. The said gasolene carbureter, which may belot any well known type, receives thel air for forming the explosive mixture through a tube 40.

'To preheut the air from the exhaust of the engine before 4it is introduced into the carburetor, the manifold 26 is provided with `a passageway 11 which conmiunicates with the tube 40 througt. a centrally disposed opening a2.A The said passageway a1 surrounds the exhaust passageway 25 and 1s The said pas sageway el communicates with the atmospheie through ports dei at each end of the fio i is

manifold 26, shown in Fig. 2.' By-thus constructing the manifold, the air and mixture are previously heated bythe exhaust gasesand preheated before being introduced intoY 'the cylinder, andthus a. more efficient combustion is obtainable.

lll/hen it is desired to run the engine on one cylinder and at reduced power, one of .y the valves 29 maybe maintained closed by its spool 111i, valve 29 will be prevented from' to' the following means: The said valve 29 is provided, as before stated, with sprlng which movesit to and maintains `it in a closed position; rl`he said spring 15 abuts at `one end against a spool-Shaped head 4t) onthe 4stem 36 fof said valve. The said spool 4 6' is adapted to beengaged by swnnl';` ing pawl 47 controlled by a thumb-screw When .pawl 47 is placed in engagement with opening thereby placingthe cylinder 29 out of operation'. The coohng water from the f cylinders may' be introduced into the jacket 16 through ac onveniently located porttil,

`shown in Fig. The water passes thence upwardly through the port 22 into the jacket A21 of the head 13and thence downwardly through port 50 into a passageway 51 along one side of the cylinder. The said passageway 51 communicates with a further passageway 52 which lies along the top of the manifold 26. The passageway 52 is Jformed by the division wall 43, the outer casing of the manifold, and a partition wall 53, shown 1n Flg. 5. At one end of the manifold 2.6, the passageway 52 turns downwardly and is provided with an outlet 54 to which an exhaust pipe (not shown)V may be connected. In order to cool the exhaust gases in the passageway 25 aiter they have passed out of the manifold, said manifold is provided with an opening which communicates with the water passagmvay and-the exhaust passageway 25. the opening 55 is controlled by a valve 5o mounted in a casing 5T in the top ot the manifold. The valve 56 is instrumental in permitting Water to be introduced into the exhaust pipe to cool the exhaust gases and to diminish the noise incidental to the exhaust.

in the above description, the engine is de scribed as running on gasolcne; means, however, are provided for operating the same on'kersene as4 follows: |'lhe engine cylinder 9 provided with lower and upper ports 17. and-` 17 in. the side thereof, as before stated. These ports. communicate with a carbureter chamber 58, 17 being an air outlet port to said chamber 58 from the piston, and port 1i' being an inlet port from the carbiilreter chamber 58 to the engine cylinder above the piston. 'Mounted along the side of said cylinder adjacent to the chamber or passageway 58 is a kerosene carburetor 59 provided with a jet 6() which lies within the passageway 53. The carburetor 59 may be of any well known type. 1The 4kerosene at the jet 60 is vaporized by the heated air that passes through the manifold and the passage 20 in the piston head. The air is heated in the passages 41 and 35'. For example, the airis preheated in passage 41.- and reheate'd in passage 35, and receives a final heat in the passage 20. Whenit is desired to run the engine on gasolene, for example, as when starting and heating the ei' gindthe supply of kerosene to'the carburater 59 is shut ofi', but, after, the engine has become suiiciently heated to run on keroeene, the supply of gasolene to the carbureter 38 is shut off and the carburetor 59 is sn pplied withkerosene.

Having described my invention, I claim: i. In an explosive engine, the combination with a crank case and a cylinder mounted thereon, of a manifold having a series of integrally united walls forming an intake passage, an exhaust passage surrounding two sides of said intake passage, air and 'water passages inclosing a side and the top lof the exhaust passage, a carburetor communieating 'with said intake passage, and an expiston having a passage forming a commu- A,terrier rpipe forming. a medium o'f communi,-

carbureter.

2. In an explosive engine, acrank case, a cylinder mounted on said crank case having exhaust ports, anda carbureter opening in a side thereof, a kerosenel carburetei' mounted over said opening and delivering explosive fluid thereto, .a piston in saidjeylindelrcontrolling said ca-rbureter opening, said nication between the crank case and said carburetei opening, a manifold mounted on.

' the side of said cylinder opposite said kero# senercarbureter, having an intake passage,

anexha-ust passage communicating with the exhaust ports'of the cylinder, an 'air passage partly.inclosing said Y intake and exhaust passages and communicating with the ati'nosphere, a 'gasolene carburetelf communieating with said-intakepassage, and anair tube exterior tothe' manifold andextending from the air passageto said last named car# bnreter, the said. cylinder being provided with a'passag'e connecting. the intake of the manifold with the cfa-nk case. i

inpresence ofa Witness.

Witness:

MATTHEW Suzanna.

CLAUDE RQRABECK; 

